What does "BFF" stand for?
Answer from a Native speaker
The initials "BFF" means best friends forever, and it’s a term of endearment used for your closest friend or friends. "BFF" is mostly used by younger people, especially girls, in casual conversation, or it is used sarcastically to refer to someone who is not a close friend. "BFF" has evolved into a noun that refers to any close friend and not necessarily your "best friend". Ex: He and I became BFFs after our families went on a vacation together. Ex: We were BFFs in high school, but we're not close anymore. Ex: I thought you guys were BFFs now.